【摘要】：近年來，我國高速鐵路迅速發(fā)展，運(yùn)營里程也在不斷增長。同時(shí)，我國是一個(gè)多地震國家，當(dāng)?shù)卣鸢l(fā)生時(shí)，行駛的列車由于地震激擾會(huì)造成列車脫軌事故，造成人員傷亡，因此要盡快建立地震預(yù)警系統(tǒng)，使鐵路運(yùn)輸?shù)陌踩玫礁佑行У谋Ｕ�，而地震預(yù)警系統(tǒng)中報(bào)警閾值設(shè)定的合理與否，直接關(guān)系到預(yù)警的效果和系統(tǒng)的可靠性。 本文首先對(duì)國內(nèi)外己有的高速鐵路地震預(yù)警閾值的現(xiàn)狀進(jìn)行了介紹，然后結(jié)合國內(nèi)外的發(fā)展現(xiàn)狀和我國高速鐵路對(duì)地震預(yù)警系統(tǒng)的實(shí)際需求，對(duì)我國高速鐵路預(yù)警系統(tǒng)的報(bào)警閾值，列車緊急控車原則等問題進(jìn)行了分析，為運(yùn)營列車的地震預(yù)警系統(tǒng)設(shè)計(jì)提供理論依據(jù)。針對(duì)高速鐵路地震監(jiān)測預(yù)警閾值相關(guān)問題進(jìn)行了如下研究： （1）為了研究地震時(shí)列車的運(yùn)行安全性，利用有限元軟件建立了車輛-軌道-橋梁耦合系統(tǒng)動(dòng)力學(xué)模型，無震條件下的計(jì)算結(jié)果與聯(lián)調(diào)聯(lián)試實(shí)測結(jié)果吻合良好，驗(yàn)證了模型的可靠性，并對(duì)整個(gè)橋梁進(jìn)行了模態(tài)分析，獲得了橋梁的頻率和振型。 介紹了作為系統(tǒng)內(nèi)部激勵(lì)源的軌道不平順和外部激勵(lì)的四條典型地震波。在總結(jié)分析列車走行安全評(píng)價(jià)指標(biāo)的基礎(chǔ)上，對(duì)地震作用下車輛-軌道-橋梁耦合系統(tǒng)進(jìn)行了大量計(jì)算，得出了在不同行車速度、不同墩高、不同地震動(dòng)強(qiáng)度、不同頻譜特性地震激勵(lì)下各項(xiàng)動(dòng)力響應(yīng)的影響規(guī)律。 （2）建立了車輛-軌道-路基耦合系統(tǒng)動(dòng)力學(xué)模型，無震條件下的計(jì)算結(jié)果與聯(lián)調(diào)聯(lián)試實(shí)測結(jié)果吻合良好，驗(yàn)證了模型的可靠性，可用于地震作用下系統(tǒng)的動(dòng)力響應(yīng)分析。對(duì)地震作用下車輛-軌道-路基系統(tǒng)進(jìn)行了大量計(jì)算，得出了在不同行車速度、不同地震動(dòng)強(qiáng)度、不同頻譜特性激勵(lì)下各項(xiàng)動(dòng)力響應(yīng)的影響規(guī)律。 （3）建立了車輛-軌道-橋梁-接觸網(wǎng)支柱（含腕臂）耦合動(dòng)力學(xué)模型和車輛-軌道-橋梁-聲屏障模型，分別分析了不同地震動(dòng)強(qiáng)度和不同頻譜特性地震激勵(lì)下的系統(tǒng)各項(xiàng)動(dòng)力響應(yīng)。 （4）基于列車運(yùn)行安全性指標(biāo)以及接觸網(wǎng)受流性能、結(jié)構(gòu)強(qiáng)度、建筑限界等方面考慮，選擇四條典型地震波對(duì)各系統(tǒng)進(jìn)行激勵(lì)，，提出了各條地震波激勵(lì)下高速列車行車限值的建議值，得出了地震動(dòng)強(qiáng)度和列車運(yùn)行速度的安全限界圖，在此基礎(chǔ)上得到了列車遭遇四條典型地震波時(shí)的報(bào)警閾值。 （5）根據(jù)不同的報(bào)警閾值，制定了相應(yīng)的緊急處置原則，總共設(shè)3個(gè)控車等級(jí)，并且根據(jù)不同的控車等級(jí)采取不同的控車措施。
[Abstract]:In recent years, our country high-speed railway develops rapidly, the mileage of operation is also increasing ceaselessly. At the same time, our country is a multi-earthquake country. When the earthquake occurs, the train running will cause train derailment accident and cause casualties because of earthquake disturbance. Therefore, we should establish earthquake warning system as soon as possible. The safety of railway transportation is guaranteed more effectively, and whether the alarm threshold is reasonable or not in the earthquake warning system is directly related to the effect of early warning and the reliability of the system. In this paper, the current situation of earthquake warning threshold of high-speed railway at home and abroad is introduced, and then combined with the development situation at home and abroad and the actual demand for earthquake warning system of high-speed railway in China. The alarm threshold and train emergency control principle of early warning system of high-speed railway in China are analyzed in order to provide theoretical basis for the design of earthquake warning system of train operation. The problems related to the threshold of earthquake monitoring and warning in high-speed railway are studied as follows: (1) in order to study the safety of train operation during earthquake, the dynamic model of vehicle-track bridge coupling system is established by using finite element software. The calculated results under the condition of no earthquake are in good agreement with the measured results of the combined adjustment test, which verifies the reliability of the model. The modal analysis of the whole bridge is carried out, and the frequency and mode shape of the bridge are obtained. Four typical seismic waves of track irregularity and external excitation are introduced. On the basis of summing up and analyzing the evaluation indexes of train running safety, a large number of calculations have been carried out on the vehicle-track bridge coupling system under seismic action, and it has been obtained that different driving speed, different pier height and different ground motion intensity are obtained. The effect of different spectral characteristics on the dynamic response under earthquake excitation. (2) the dynamic model of vehicle-track-roadbed coupling system is established. The calculated results under the condition of no earthquake agree well with the measured results of the combined adjustment test. The reliability of the model is verified and can be used to analyze the dynamic response of the system under seismic action. A large number of calculations of vehicle-track subgrade system under seismic action have been carried out, and the influence law of dynamic response under different driving speed, different ground motion intensity and different spectrum characteristics has been obtained. (3) the vehicle-rail-bridge-catenary (including wrist arm) coupling dynamic model and the vehicle-rail-bridge-noise barrier model are established. The dynamic responses of the system under seismic excitation with different ground motion intensity and different spectral characteristics are analyzed respectively. (4) based on the safety index of train operation, the performance of catenary, the strength of structure and the limit of building, four typical seismic waves are selected to excite the system. In this paper, the suggested values of the train operating limits under the excitation of various seismic waves are proposed, and the safety limit diagrams of the ground motion intensity and the train speed are obtained. On the basis of this, the warning thresholds for trains to encounter four typical seismic waves are obtained. (5) according to the different alarm threshold, the corresponding emergency disposal principle is established. There are three vehicle control classes, and different vehicle control measures are taken according to different vehicle control classes.
【學(xué)位授予單位】：中國鐵道科學(xué)研究院
【學(xué)位級(jí)別】：博士
【學(xué)位授予年份】：2014
【分類號(hào)】：U238;U298

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